... Water is necessary for agriculture. A. safeguard B. production C. preservation D. conservation 21. Conservation also includes searching for fuels such as the energy of the sun A. alternating ... the translator? - Well, either you or he A. was B. is C. are D. were 27. Who goes to the contest ? Jim with Jane A. did B. do C. go D. does 28. The meal , wasn't very tasty , was...